Steam feed cooker and drier



(No Model.) 2sneetssnee z 1.

T. IL-DANIELS. Steam Fged'fi'ooker an'd" Diier.

Patented Qec. 14, 1880.

N. PEIERS, FI'lDTO-LIYHOGRAPHER, WASHINGTON. D c.

(No Model.) 2 Sheets-Sheet 2 TpE. DANIELS. .steam -Peedaeo-oker andDrier. No. 235,343. Patented Dec. 14,1880.

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N PETERS. FHOTOJJTNOGRAFNER, WASHINGTON. D C.

UNITED STATES PATENT Price.

TAYLOR E. DANIELS, OF CHICAGO, ILLINOIS.

STEAM FE E D COOKER AND DRIER.

SPECIFICATION forming part of Letters Patent No. 235,343, dated December14, 1880. Application filed September 28, 1880. (No model.)

To all whom it may concern:

Be it known that I, TAYLOR E. DANIELS, a citizen of the United States,residing'atChica-go, 1n the'county of Cook and State'of Illinois, haveinvented certain new and useful Improvements in Steam Feed Cookers andDriers; and I hereby declare the following to be a full, clear, andexact description thereof, reference being had to the accompanyingdrawings, of which-.

Figure 1 is a side elevation of the apparatus wlth certain portionsbroken "away, showing the interior construction; Figs. 2 and3, oppos teend views; Fig. 4, a vertical cross-sectron of the apparatus; and Fig.5, a detail section showing the construction of the jet-pipes whlchconvey steam into the cooking-cylinder.

My present invention relates to certain improvements upon the apparatusdescribed in Letters Patent of theUnited States No. 225,511, granted tome March 16, 1880. p Theseimprovements consist,'first, in employmg,instead of the vertical cooker with conelike steam-discharging stirrersdescribed in the Letters Patent aforesaid, one or more horizontal screwconveyers inclosed within cylinders similar to those employed in thedrler, and communicating with the said'cylinders of the drier in thesame manner as the latter communicate with one another, together w1thappliances for injecting steam into the Interior of the grain as it iscarried through the cylinder; secondly, in providing a hot-air flue uponthe lower face of each cylinder of the drier, communicating with theinterior of said cylinder through perforations in said cylruder;thirdly, in the exhaust which I employ for carrying off the vapors whicharise within the cylinders of the drier; and, furthermore, in certaindetails of construction-a1l as hereinafter more fully set forth.

In the drawings, A is the case of the apparatus; B B, the three pairs ofhorizontal cyllnders of the drier communicating with one another atalternate ends through vertical passages '11, and the lowest pair havingdischarge-chutes c, all this being substantially the same as in my saidformer Letters Patent, find hence requiring no particular descriptionere.

O C are the screw-conveyers lying within the cylinders B, and havinghollow shafts journaled into the ends of the case A, and revolved bymeans of gear-wheels a, operated in common by a pulley upon the shaft D,all this being also substantially as described in my said former LettersPatent, except that I now perforate the shafts of the conveyers andforce hot air into them instead of steam, as will be hereinafterexplained.

E E are gates of steam-pipe, which I now prefer to arrange edgewise uponboth sides of the cylinders B, as shown, and preferably curved, so as tolie against the cylinders instead of above and below them, as formerly,th eir function, however, remaining unchanged.

The functions and operation of this much of my apparatus being fullydescribed in the specification of my said Letters Patent No. 225,511, Ishall now proceed to describe my present improvements, beginning withthe cooker.

B B are two horizontal hollow cylinders extending from end to end of thecase A, and corresponding to those of the drier below them. Each has afeed-chute, t, at one end, and communicates with the cylinder B beneathit by means of a chute, v, at the opposite end, in the same manner asthe cylinders B communicate with one another.

0 is a screw-conveyer within each cylinder B, and journaled in the endsof the case A. Both the shaft and blade-of this conveyer are hollow, andtheir interiors communicate, as clearly shown in Fig. 4. The blade ofthis conveyer is provided with perforations s.

F is a pipe, which is to be connected with a suitable steam-generator,and branches of this pipe lead both into the hollow shafts of thescrew-conveyors O and into the uppermost gates of pipe E.

G G are pipes leading from the steam-pipe F, and extending across theinterior of the case A parallel with the cylinders B, and a shortdistance below them. The interiors of the pipes G and cylinders Bcommunicate with each other through jet-pipes H, screwed into bushings1" upon each, as clearly shown in Fig. 5. The various shafts and pipesare provided at their points of junction with the steam-pipe F, or nearthe same with cut-01f valves q, and all find an outlet by way of thewaste-pipe K, at the opposite end of the apparatns.

The cylinders B are provided along their lower faces at pointsintermediate between the jet-pipes H with perforations p, and L is acurved drip-pan below the said cylinders, inclined from each end to awaste-pipe, 0, which leads out through the bottom of the 63.86.

The screw-conveyers C are provided with pulleys n on the outlet ends oftheir shafts, and are rotated by means of belts m, connecting thepulleys n with pulleys n on the corresponding ends of the shafts of thecentral screw-conveyers of the drier.

The construction of the cylinders B and their attendant parts comprisingthe drier is as follows: The lower faces of the cylinders B are providedwith perforations p, and flues M, semicircular in form, fit closeagainst the cyl inders covering the said perforations.

The hollow shafts of the screw-conveyers C are provided withperforations s, and each is connected by means of a pipe, I, having apacking-joint adapted to permit the revolution of the conveyer with ahot-air shaft, N. Branch pipes k from these hot-air shafts lead alsointo the fines M, which latter are closed at their opposite ends, andthus open only into the cylinders B through the perforations p.

O O are horizontal pipes, one above each of the cylinders B of thedrier, opening through the case A at one end and leading into adraftflue, P, at the other; and i i are short pipes sloping in thedirection of the draft, as shown in Fig. 1, leading from the pipes 0into the tops of the cylinders B.

The operation is as follows: Steam is admitted, by way of the pipes F,into the interior of the screw-conveyers C, and also into the pipes Gand gates of pipe B. At the same time hot air is forced, by way of thestandpipes N and branch pipes thereof, into the hollow perforated shaftsof the screw-conveyers O, and into the fines M. The machinery havingbeen set in motion, the material to be cooked is fed from suitablehoppers into the cylinders B by way of the chutes t, when it isimmediately taken up by the conveyers therein and carried along until itreaches the chute '1), when it drops into the uppermost cylinder of thedrier, along which it passes until it falls into the next cylinder, andso continues to do until it emerges from the discharge '0, as describedin my former Letters Patent. While passing along the cylinder B it issubjected to the action of steam passing into the interior of saidcylinder both through the perforations sin the blade of the conveyer andthrough the jet-pipes H.

Those varieties of grain requiring a greater degree of cooking should befed into one of the cylinders B, and those requiring a less into theother, and the flow of steam so regulated by means of the valves q as toadmit a proportionately greater volume into the latter cylinder than theformer, or else the flow either through the conveyer or the pipe G maybe wholly cut off, and steam admitted only through the other. The steamfinds an outlet from each into the exhaust-pipe K, and the moisturewhich collects on the bottom of the cylinder B drips through theopenings 10 into the pan L, and is carried off by the pan 0.

Upon entering the drier, and while passing back and forth through thecylinders of the same, the cooked material is subjected to the action ofhot air both from within by way of the perforations s in the shafts ofthe conveyers and from without by way of the perforations 10, leadingfrom the fines M. The gates of pipe E add still further to the heat towhich the grain is subjected, lying, as they do, close to the cylinders.

If desired, screw-conveyors like those in the cooker-that is, withhollow blades as well as hollow shafts-may be used also in the drierwith or without the addition of perforations in the shafts. In this cae,of course, hot air would be passed through them instead of steam. Theshaft as well as the blade may be perforated when used in the cookeralso, if preferred. It should be remarked that the chief feature of theconveyer 0 lies in the intercommunicatin g hollow shaft and blade, andthat the perforations therein might, under certain circumstances, as inthe drier, for example, be wholly dispensed with.

The vapors which are created within the cylinders B by the dryingprocess pass into the pipes 0 through the oblique tubes i and escapefrom the apparatus by way of the draftflue P.

If desired, a forced current may be created through the pipes 0 anddraft-flue P by connecting the former with the hot-air shafts N, andthus accelerating the escape of the vapors; but it i not thought thatthis will be found necessary.

What I claim as new, and desire to secure by Letters Patent, is

1. In a feed-cooker, the combination of the cylinder B, screw-conveyerwithin the same, steam-pipe G, below the said cylinder, and jetpipes H,connecting the interiors of said steampipe and cylinder, substantiallyas and for the purpose set forth.

2. In a feed'cooker, the combination, with the hollow cylinder B, havingperforations p in its lower face, screw-conveyer O, steampipe F, pipe G,and jet-pipes H, all as shown, of the drip-pan L and waste 0,substantially as described.

3. A screw-conveyer having a perforated hollow shaft, in combinationwith an inclosing cylinder or case, and with a pipe adapted to conveyhot air into the interior of said hollow shaft, substantially asdescribed.

4. In combination with the cylinder B, having perforations in its lowerface, and with a screw-conveyer within said cylinder, the flue M, pipe7:, for conveying hot air into said flue,

and draft-flue P, communicating with the in- 0, tubes '5, and draft-flueP, the whole being terior of the cylinder B, the Whole beingconconstructed and arranged to operate substanstructed and arrangedsubstantially as detially as described.

scribed. TAYLOR E. DANIELS.

5. In combination with the cylinder B, In presence ofscrew-conveyerWithin the same, and means A. M. KEANE,

for forcing hot air into said cylinder, the pipe JOHN ALANSON.

